Løs 123-173+59-92+189-249+145-183+227-59+103-231+168-47+39-126+215-268+132-27+183-77+192-116+29-159+73-241+196-155+172-142+194-187+47-116+148-232+219-141+192-98+67-19+135-193+52-91+251-216+137-83+39-168+121-74+237-121+173-128+191-246+267-168+139-59+97-123+156

$$123-173+59-92+189-249+145-183+227-59+103-231+168-47+39-126+215-268+132-27+183-77+192-116+29-159+73-241+196-155+172-142+194-187+47-116+148-232+219-141+192-98+67-19+135-193+52-91+251-216+137-83+39-168+121-74+237-121+173-128+191-246+267-168+139-59+97-123+156$$

Evaluer

$$299$$

Løsningstrinn

Trekk fra 173 fra 123 for å få -50.

$$-50+59-92+189-249+145-183+227-59+103-231+168-47+39-126+215-268+132-27+183-77+192-116+29-159+73-241+196-155+172-142+194-187+47-116+148-232+219-141+192-98+67-19+135-193+52-91+251-216+137-83+39-168+121-74+237-121+173-128+191-246+267-168+139-59+97-123+156$$

Legg sammen -50 og 59 for å få 9.

$$9-92+189-249+145-183+227-59+103-231+168-47+39-126+215-268+132-27+183-77+192-116+29-159+73-241+196-155+172-142+194-187+47-116+148-232+219-141+192-98+67-19+135-193+52-91+251-216+137-83+39-168+121-74+237-121+173-128+191-246+267-168+139-59+97-123+156$$

Trekk fra 92 fra 9 for å få -83.

$$-83+189-249+145-183+227-59+103-231+168-47+39-126+215-268+132-27+183-77+192-116+29-159+73-241+196-155+172-142+194-187+47-116+148-232+219-141+192-98+67-19+135-193+52-91+251-216+137-83+39-168+121-74+237-121+173-128+191-246+267-168+139-59+97-123+156$$

Legg sammen -83 og 189 for å få 106.

$$106-249+145-183+227-59+103-231+168-47+39-126+215-268+132-27+183-77+192-116+29-159+73-241+196-155+172-142+194-187+47-116+148-232+219-141+192-98+67-19+135-193+52-91+251-216+137-83+39-168+121-74+237-121+173-128+191-246+267-168+139-59+97-123+156$$

Trekk fra 249 fra 106 for å få -143.

$$-143+145-183+227-59+103-231+168-47+39-126+215-268+132-27+183-77+192-116+29-159+73-241+196-155+172-142+194-187+47-116+148-232+219-141+192-98+67-19+135-193+52-91+251-216+137-83+39-168+121-74+237-121+173-128+191-246+267-168+139-59+97-123+156$$

Legg sammen -143 og 145 for å få 2.

$$2-183+227-59+103-231+168-47+39-126+215-268+132-27+183-77+192-116+29-159+73-241+196-155+172-142+194-187+47-116+148-232+219-141+192-98+67-19+135-193+52-91+251-216+137-83+39-168+121-74+237-121+173-128+191-246+267-168+139-59+97-123+156$$

Trekk fra 183 fra 2 for å få -181.

$$-181+227-59+103-231+168-47+39-126+215-268+132-27+183-77+192-116+29-159+73-241+196-155+172-142+194-187+47-116+148-232+219-141+192-98+67-19+135-193+52-91+251-216+137-83+39-168+121-74+237-121+173-128+191-246+267-168+139-59+97-123+156$$

Legg sammen -181 og 227 for å få 46.

$$46-59+103-231+168-47+39-126+215-268+132-27+183-77+192-116+29-159+73-241+196-155+172-142+194-187+47-116+148-232+219-141+192-98+67-19+135-193+52-91+251-216+137-83+39-168+121-74+237-121+173-128+191-246+267-168+139-59+97-123+156$$

Trekk fra 59 fra 46 for å få -13.

$$-13+103-231+168-47+39-126+215-268+132-27+183-77+192-116+29-159+73-241+196-155+172-142+194-187+47-116+148-232+219-141+192-98+67-19+135-193+52-91+251-216+137-83+39-168+121-74+237-121+173-128+191-246+267-168+139-59+97-123+156$$

Legg sammen -13 og 103 for å få 90.

$$90-231+168-47+39-126+215-268+132-27+183-77+192-116+29-159+73-241+196-155+172-142+194-187+47-116+148-232+219-141+192-98+67-19+135-193+52-91+251-216+137-83+39-168+121-74+237-121+173-128+191-246+267-168+139-59+97-123+156$$

Trekk fra 231 fra 90 for å få -141.

$$-141+168-47+39-126+215-268+132-27+183-77+192-116+29-159+73-241+196-155+172-142+194-187+47-116+148-232+219-141+192-98+67-19+135-193+52-91+251-216+137-83+39-168+121-74+237-121+173-128+191-246+267-168+139-59+97-123+156$$

Legg sammen -141 og 168 for å få 27.

$$27-47+39-126+215-268+132-27+183-77+192-116+29-159+73-241+196-155+172-142+194-187+47-116+148-232+219-141+192-98+67-19+135-193+52-91+251-216+137-83+39-168+121-74+237-121+173-128+191-246+267-168+139-59+97-123+156$$

Trekk fra 47 fra 27 for å få -20.

$$-20+39-126+215-268+132-27+183-77+192-116+29-159+73-241+196-155+172-142+194-187+47-116+148-232+219-141+192-98+67-19+135-193+52-91+251-216+137-83+39-168+121-74+237-121+173-128+191-246+267-168+139-59+97-123+156$$

Legg sammen -20 og 39 for å få 19.

$$19-126+215-268+132-27+183-77+192-116+29-159+73-241+196-155+172-142+194-187+47-116+148-232+219-141+192-98+67-19+135-193+52-91+251-216+137-83+39-168+121-74+237-121+173-128+191-246+267-168+139-59+97-123+156$$

Trekk fra 126 fra 19 for å få -107.

$$-107+215-268+132-27+183-77+192-116+29-159+73-241+196-155+172-142+194-187+47-116+148-232+219-141+192-98+67-19+135-193+52-91+251-216+137-83+39-168+121-74+237-121+173-128+191-246+267-168+139-59+97-123+156$$

Legg sammen -107 og 215 for å få 108.

$$108-268+132-27+183-77+192-116+29-159+73-241+196-155+172-142+194-187+47-116+148-232+219-141+192-98+67-19+135-193+52-91+251-216+137-83+39-168+121-74+237-121+173-128+191-246+267-168+139-59+97-123+156$$

Trekk fra 268 fra 108 for å få -160.

$$-160+132-27+183-77+192-116+29-159+73-241+196-155+172-142+194-187+47-116+148-232+219-141+192-98+67-19+135-193+52-91+251-216+137-83+39-168+121-74+237-121+173-128+191-246+267-168+139-59+97-123+156$$

Legg sammen -160 og 132 for å få -28.

$$-28-27+183-77+192-116+29-159+73-241+196-155+172-142+194-187+47-116+148-232+219-141+192-98+67-19+135-193+52-91+251-216+137-83+39-168+121-74+237-121+173-128+191-246+267-168+139-59+97-123+156$$

Trekk fra 27 fra -28 for å få -55.

$$-55+183-77+192-116+29-159+73-241+196-155+172-142+194-187+47-116+148-232+219-141+192-98+67-19+135-193+52-91+251-216+137-83+39-168+121-74+237-121+173-128+191-246+267-168+139-59+97-123+156$$

Legg sammen -55 og 183 for å få 128.

$$128-77+192-116+29-159+73-241+196-155+172-142+194-187+47-116+148-232+219-141+192-98+67-19+135-193+52-91+251-216+137-83+39-168+121-74+237-121+173-128+191-246+267-168+139-59+97-123+156$$

Trekk fra 77 fra 128 for å få 51.

$$51+192-116+29-159+73-241+196-155+172-142+194-187+47-116+148-232+219-141+192-98+67-19+135-193+52-91+251-216+137-83+39-168+121-74+237-121+173-128+191-246+267-168+139-59+97-123+156$$

Legg sammen 51 og 192 for å få 243.

$$243-116+29-159+73-241+196-155+172-142+194-187+47-116+148-232+219-141+192-98+67-19+135-193+52-91+251-216+137-83+39-168+121-74+237-121+173-128+191-246+267-168+139-59+97-123+156$$

Trekk fra 116 fra 243 for å få 127.

$$127+29-159+73-241+196-155+172-142+194-187+47-116+148-232+219-141+192-98+67-19+135-193+52-91+251-216+137-83+39-168+121-74+237-121+173-128+191-246+267-168+139-59+97-123+156$$

Legg sammen 127 og 29 for å få 156.

$$156-159+73-241+196-155+172-142+194-187+47-116+148-232+219-141+192-98+67-19+135-193+52-91+251-216+137-83+39-168+121-74+237-121+173-128+191-246+267-168+139-59+97-123+156$$

Trekk fra 159 fra 156 for å få -3.

$$-3+73-241+196-155+172-142+194-187+47-116+148-232+219-141+192-98+67-19+135-193+52-91+251-216+137-83+39-168+121-74+237-121+173-128+191-246+267-168+139-59+97-123+156$$

Legg sammen -3 og 73 for å få 70.

$$70-241+196-155+172-142+194-187+47-116+148-232+219-141+192-98+67-19+135-193+52-91+251-216+137-83+39-168+121-74+237-121+173-128+191-246+267-168+139-59+97-123+156$$

Trekk fra 241 fra 70 for å få -171.

$$-171+196-155+172-142+194-187+47-116+148-232+219-141+192-98+67-19+135-193+52-91+251-216+137-83+39-168+121-74+237-121+173-128+191-246+267-168+139-59+97-123+156$$

Legg sammen -171 og 196 for å få 25.

$$25-155+172-142+194-187+47-116+148-232+219-141+192-98+67-19+135-193+52-91+251-216+137-83+39-168+121-74+237-121+173-128+191-246+267-168+139-59+97-123+156$$

Trekk fra 155 fra 25 for å få -130.

$$-130+172-142+194-187+47-116+148-232+219-141+192-98+67-19+135-193+52-91+251-216+137-83+39-168+121-74+237-121+173-128+191-246+267-168+139-59+97-123+156$$

Legg sammen -130 og 172 for å få 42.

$$42-142+194-187+47-116+148-232+219-141+192-98+67-19+135-193+52-91+251-216+137-83+39-168+121-74+237-121+173-128+191-246+267-168+139-59+97-123+156$$

Trekk fra 142 fra 42 for å få -100.

$$-100+194-187+47-116+148-232+219-141+192-98+67-19+135-193+52-91+251-216+137-83+39-168+121-74+237-121+173-128+191-246+267-168+139-59+97-123+156$$

Legg sammen -100 og 194 for å få 94.

$$94-187+47-116+148-232+219-141+192-98+67-19+135-193+52-91+251-216+137-83+39-168+121-74+237-121+173-128+191-246+267-168+139-59+97-123+156$$

Trekk fra 187 fra 94 for å få -93.

$$-93+47-116+148-232+219-141+192-98+67-19+135-193+52-91+251-216+137-83+39-168+121-74+237-121+173-128+191-246+267-168+139-59+97-123+156$$

Legg sammen -93 og 47 for å få -46.

$$-46-116+148-232+219-141+192-98+67-19+135-193+52-91+251-216+137-83+39-168+121-74+237-121+173-128+191-246+267-168+139-59+97-123+156$$

Trekk fra 116 fra -46 for å få -162.

$$-162+148-232+219-141+192-98+67-19+135-193+52-91+251-216+137-83+39-168+121-74+237-121+173-128+191-246+267-168+139-59+97-123+156$$

Legg sammen -162 og 148 for å få -14.

$$-14-232+219-141+192-98+67-19+135-193+52-91+251-216+137-83+39-168+121-74+237-121+173-128+191-246+267-168+139-59+97-123+156$$

Trekk fra 232 fra -14 for å få -246.

$$-246+219-141+192-98+67-19+135-193+52-91+251-216+137-83+39-168+121-74+237-121+173-128+191-246+267-168+139-59+97-123+156$$

Legg sammen -246 og 219 for å få -27.

$$-27-141+192-98+67-19+135-193+52-91+251-216+137-83+39-168+121-74+237-121+173-128+191-246+267-168+139-59+97-123+156$$

Trekk fra 141 fra -27 for å få -168.

$$-168+192-98+67-19+135-193+52-91+251-216+137-83+39-168+121-74+237-121+173-128+191-246+267-168+139-59+97-123+156$$

Legg sammen -168 og 192 for å få 24.

$$24-98+67-19+135-193+52-91+251-216+137-83+39-168+121-74+237-121+173-128+191-246+267-168+139-59+97-123+156$$

Trekk fra 98 fra 24 for å få -74.

$$-74+67-19+135-193+52-91+251-216+137-83+39-168+121-74+237-121+173-128+191-246+267-168+139-59+97-123+156$$

Legg sammen -74 og 67 for å få -7.

$$-7-19+135-193+52-91+251-216+137-83+39-168+121-74+237-121+173-128+191-246+267-168+139-59+97-123+156$$

Trekk fra 19 fra -7 for å få -26.

$$-26+135-193+52-91+251-216+137-83+39-168+121-74+237-121+173-128+191-246+267-168+139-59+97-123+156$$

Legg sammen -26 og 135 for å få 109.

$$109-193+52-91+251-216+137-83+39-168+121-74+237-121+173-128+191-246+267-168+139-59+97-123+156$$

Trekk fra 193 fra 109 for å få -84.

$$-84+52-91+251-216+137-83+39-168+121-74+237-121+173-128+191-246+267-168+139-59+97-123+156$$

Legg sammen -84 og 52 for å få -32.

$$-32-91+251-216+137-83+39-168+121-74+237-121+173-128+191-246+267-168+139-59+97-123+156$$

Trekk fra 91 fra -32 for å få -123.

$$-123+251-216+137-83+39-168+121-74+237-121+173-128+191-246+267-168+139-59+97-123+156$$

Legg sammen -123 og 251 for å få 128.

$$128-216+137-83+39-168+121-74+237-121+173-128+191-246+267-168+139-59+97-123+156$$

Trekk fra 216 fra 128 for å få -88.

$$-88+137-83+39-168+121-74+237-121+173-128+191-246+267-168+139-59+97-123+156$$

Legg sammen -88 og 137 for å få 49.

$$49-83+39-168+121-74+237-121+173-128+191-246+267-168+139-59+97-123+156$$

Trekk fra 83 fra 49 for å få -34.

$$-34+39-168+121-74+237-121+173-128+191-246+267-168+139-59+97-123+156$$

Legg sammen -34 og 39 for å få 5.

$$5-168+121-74+237-121+173-128+191-246+267-168+139-59+97-123+156$$

Trekk fra 168 fra 5 for å få -163.

$$-163+121-74+237-121+173-128+191-246+267-168+139-59+97-123+156$$

Legg sammen -163 og 121 for å få -42.

$$-42-74+237-121+173-128+191-246+267-168+139-59+97-123+156$$

Trekk fra 74 fra -42 for å få -116.

$$-116+237-121+173-128+191-246+267-168+139-59+97-123+156$$

Legg sammen -116 og 237 for å få 121.

$$121-121+173-128+191-246+267-168+139-59+97-123+156$$

Trekk fra 121 fra 121 for å få 0.

$$173-128+191-246+267-168+139-59+97-123+156$$

Trekk fra 128 fra 173 for å få 45.

$$45+191-246+267-168+139-59+97-123+156$$

Legg sammen 45 og 191 for å få 236.

$$236-246+267-168+139-59+97-123+156$$

Trekk fra 246 fra 236 for å få -10.

$$-10+267-168+139-59+97-123+156$$

Legg sammen -10 og 267 for å få 257.

$$257-168+139-59+97-123+156$$

Trekk fra 168 fra 257 for å få 89.

$$89+139-59+97-123+156$$

Legg sammen 89 og 139 for å få 228.

$$228-59+97-123+156$$

Trekk fra 59 fra 228 for å få 169.

$$169+97-123+156$$

Legg sammen 169 og 97 for å få 266.

$$266-123+156$$

Trekk fra 123 fra 266 for å få 143.

$$143+156$$

Legg sammen 143 og 156 for å få 299.

$$299$$

Faktoriser

$$13\times 23$$